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Re:Google Duplex: An AI System for Accomplishing Real World ... by macintux on Tuesday May 08, 2018 @04:15PM (#17024541)
Hence the idea of doing it in a frequency humans can't hear.
Re:Google Duplex: An AI System for Accomplishing Real World ... by tlrobinson on Tuesday May 08, 2018 @04:27PM (#17024692)
Hence the:

> (since that's probably filtered anyway)

Phone lines are optimized for frequencies humans can hear, though I'm guessing you could get enough bandwidth out of the edges to convince the other side you're a machine without bothering a human too much.